Question 844671
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Hi,
x+y=5 0r x = (5-y)    and {{{0.25x + 0.75y= 0.70*5gal}}}
 {{{0.25(5-y) + 0.75y = 0.70*5gal}}}
         y = 0.45*5gal / .5 = 4.5gal, amount of 75% solution    and then find (5-y) for the 25% solution